And her defense attorney Robert Soloway didn’t deny then that Salzman, known inside the group as “Prefect,” was speaking with prosecutors, but said Tuesday she wouldn’t be cooperating against her co-defendants as part of her plea.

“There is not a cooperation agreement on the table,” he told The Post.

Soloway declined to comment further.

The 63-year-old registered nurse would be a powerful get for the government, given her longtime relationship with guru — and alleged sex trafficker — Raniere.

Opening statements are currently expected for April 29.

Mack is accused of overseeing a secret sex cult within Nxivm, called DOS, in which prosecutors say women were starved, branded and expected to have sex with Raniere.